Light-Induced, Structural Matrix Guided Stepwise Spin-State Switching in 3d-5d Molecular Assembly

Kaushik, K and Sarkar, A and Kamilya, S and Li, Y and Dechambenoit, P and Rouzières, M and Mehta, S and Mondal, A (2023) Light-Induced, Structural Matrix Guided Stepwise Spin-State Switching in 3d-5d Molecular Assembly. In: Inorganic Chemistry, 63 . 7604 -7612.

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Abstract

A new iron(II) molecular complex W(CN)8Fe(bik*)32BF4·7H2O·1.5CH3OH (1.7H2O·1.5CH3OH) was synthesized using a versatile octacyanotungstate(V) building block and N-donor bidentate ligand (bik* = bis(1-ethyl-1H-imidazol-2-yl)ketone) and detailed characterizations were carried out. The crystal structure of 1.7H2O·1.5CH3OH is composed of an ionic salt from one anionic W(CN)83- unit, two isolated cationic Fe(bik*)32+ units, and one BF4- counteranion in the asymmetric unit. Magnetic studies of 1.7H2O·1.5CH3OH display interesting two-step reversible thermo-induced spin-state switching and the partially desolvated form 1.7H2O shows a photomagnetic effect at low temperatures. Additionally, the physical properties of 1.7H2O·1.5CH3OH were compared with the monomeric unit of {Fe(bik*)32}·4ReO4·H2O (2.H2O) and detailed photophysical investigations were also performed to study the effect of a structural matrix {W(CN)83- and ReO4- unit} on the spin-state switching properties of the Fe(bik*)32+ unit in both systems (1.7H2O·1.5CH3OH and 2.H2O). © 2024 American Chemical Society.

Item Type:	Journal Article
Publication:	Inorganic Chemistry
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Keywords:	Crystal structure; Dyes; Iron compounds; Ketones; Spin dynamics, 1H-imidazole; Bidentate ligands; Building blockes; Light-induced; Molecular assembly; Molecular complexes; Octacyanotungstate; Spin-state switching; Structural matrix; Synthesised, Ligands
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	04 Sep 2024 05:46
Last Modified:	04 Sep 2024 05:46
URI:	http://eprints.iisc.ac.in/id/eprint/84979

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